Finding the Fourth Proportional to 664,851,001.70, 997,276,502.55 and 358,740,985.70
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Solution
The fourth proportional to 664,851,001.70, 997,276,502.55 and 358,740,985.70 is: 538,111,478.55
Step by Step Solution
- Step 1: Write the proportion equation
664,851,001.70 : 997,276,502.55 = 358,740,985.70 : x - Step 2: Convert to fraction form
664,851,001.70/997,276,502.55 = 358,740,985.70/x - Step 3: Cross multiply
664,851,001.70x = 997,276,502.55 × 358,740,985.70 - Step 4: Simplify right side
664,851,001.70x = 357,763,955,540,235,520 - Step 5: Solve for x
x = 357,763,955,540,235,520/664,851,001.70 - Step 6: Final answer
x = 538,111,478.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.